Home Postcodes by state SA 5016 Postcode 5016 5016 is the postcode for 3 localities in SA: Largs Bay, Largs North and Peterhead. Localities with postcode 5016Largs BaySALargs NorthSAPeterheadSA Postcode 5016 State or territory South Australia (SA) Localities 3 Council area Port Adelaide Enfield Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5015 · Postcode 5017